summaryrefslogtreecommitdiffstats
path: root/drivers/firmware/efi/cper.c
blob: ea7ca74fc1730e021273dcdfc77c8def8f5c8ed6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
// SPDX-License-Identifier: GPL-2.0
/*
 * UEFI Common Platform Error Record (CPER) support
 *
 * Copyright (C) 2010, Intel Corp.
 *	Author: Huang Ying <ying.huang@intel.com>
 *
 * CPER is the format used to describe platform hardware error by
 * various tables, such as ERST, BERT and HEST etc.
 *
 * For more information about CPER, please refer to Appendix N of UEFI
 * Specification version 2.4.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/time.h>
#include <linux/cper.h>
#include <linux/dmi.h>
#include <linux/acpi.h>
#include <linux/pci.h>
#include <linux/aer.h>
#include <linux/printk.h>
#include <linux/bcd.h>
#include <acpi/ghes.h>
#include <ras/ras_event.h>

static char rcd_decode_str[CPER_REC_LEN];

/*
 * CPER record ID need to be unique even after reboot, because record
 * ID is used as index for ERST storage, while CPER records from
 * multiple boot may co-exist in ERST.
 */
u64 cper_next_record_id(void)
{
	static atomic64_t seq;

	if (!atomic64_read(&seq)) {
		time64_t time = ktime_get_real_seconds();

		/*
		 * This code is unlikely to still be needed in year 2106,
		 * but just in case, let's use a few more bits for timestamps
		 * after y2038 to be sure they keep increasing monotonically
		 * for the next few hundred years...
		 */
		if (time < 0x80000000)
			atomic64_set(&seq, (ktime_get_real_seconds()) << 32);
		else
			atomic64_set(&seq, 0x8000000000000000ull |
					   ktime_get_real_seconds() << 24);
	}

	return atomic64_inc_return(&seq);
}
EXPORT_SYMBOL_GPL(cper_next_record_id);

static const char * const severity_strs[] = {
	"recoverable",
	"fatal",
	"corrected",
	"info",
};

const char *cper_severity_str(unsigned int severity)
{
	return severity < ARRAY_SIZE(severity_strs) ?
		severity_strs[severity] : "unknown";
}
EXPORT_SYMBOL_GPL(cper_severity_str);

/*
 * cper_print_bits - print strings for set bits
 * @pfx: prefix for each line, including log level and prefix string
 * @bits: bit mask
 * @strs: string array, indexed by bit position
 * @strs_size: size of the string array: @strs
 *
 * For each set bit in @bits, print the corresponding string in @strs.
 * If the output length is longer than 80, multiple line will be
 * printed, with @pfx is printed at the beginning of each line.
 */
void cper_print_bits(const char *pfx, unsigned int bits,
		     const char * const strs[], unsigned int strs_size)
{
	int i, len = 0;
	const char *str;
	char buf[84];

	for (i = 0; i < strs_size; i++) {
		if (!(bits & (1U << i)))
			continue;
		str = strs[i];
		if (!str)
			continue;
		if (len && len + strlen(str) + 2 > 80) {
			printk("%s\n", buf);
			len = 0;
		}
		if (!len)
			len = snprintf(buf, sizeof(buf), "%s%s", pfx, str);
		else
			len += scnprintf(buf+len, sizeof(buf)-len, ", %s", str);
	}
	if (len)
		printk("%s\n", buf);
}

static const char * const proc_type_strs[] = {
	"IA32/X64",
	"IA64",
	"ARM",
};

static const char * const proc_isa_strs[] = {
	"IA32",
	"IA64",
	"X64",
	"ARM A32/T32",
	"ARM A64",
};

const char * const cper_proc_error_type_strs[] = {
	"cache error",
	"TLB error",
	"bus error",
	"micro-architectural error",
};

static const char * const proc_op_strs[] = {
	"unknown or generic",
	"data read",
	"data write",
	"instruction execution",
};

static const char * const proc_flag_strs[] = {
	"restartable",
	"precise IP",
	"overflow",
	"corrected",
};

static void cper_print_proc_generic(const char *pfx,
				    const struct cper_sec_proc_generic *proc)
{
	if (proc->validation_bits & CPER_PROC_VALID_TYPE)
		printk("%s""processor_type: %d, %s\n", pfx, proc->proc_type,
		       proc->proc_type < ARRAY_SIZE(proc_type_strs) ?
		       proc_type_strs[proc->proc_type] : "unknown");
	if (proc->validation_bits & CPER_PROC_VALID_ISA)
		printk("%s""processor_isa: %d, %s\n", pfx, proc->proc_isa,
		       proc->proc_isa < ARRAY_SIZE(proc_isa_strs) ?
		       proc_isa_strs[proc->proc_isa] : "unknown");
	if (proc->validation_bits & CPER_PROC_VALID_ERROR_TYPE) {
		printk("%s""error_type: 0x%02x\n", pfx, proc->proc_error_type);
		cper_print_bits(pfx, proc->proc_error_type,
				cper_proc_error_type_strs,
				ARRAY_SIZE(cper_proc_error_type_strs));
	}
	if (proc->validation_bits & CPER_PROC_VALID_OPERATION)
		printk("%s""operation: %d, %s\n", pfx, proc->operation,
		       proc->operation < ARRAY_SIZE(proc_op_strs) ?
		       proc_op_strs[proc->operation] : "unknown");
	if (proc->validation_bits & CPER_PROC_VALID_FLAGS) {
		printk("%s""flags: 0x%02x\n", pfx, proc->flags);
		cper_print_bits(pfx, proc->flags, proc_flag_strs,
				ARRAY_SIZE(proc_flag_strs));
	}
	if (proc->validation_bits & CPER_PROC_VALID_LEVEL)
		printk("%s""level: %d\n", pfx, proc->level);
	if (proc->validation_bits & CPER_PROC_VALID_VERSION)
		printk("%s""version_info: 0x%016llx\n", pfx, proc->cpu_version);
	if (proc->validation_bits & CPER_PROC_VALID_ID)
		printk("%s""processor_id: 0x%016llx\n", pfx, proc->proc_id);
	if (proc->validation_bits & CPER_PROC_VALID_TARGET_ADDRESS)
		printk("%s""target_address: 0x%016llx\n",
		       pfx, proc->target_addr);
	if (proc->validation_bits & CPER_PROC_VALID_REQUESTOR_ID)
		printk("%s""requestor_id: 0x%016llx\n",
		       pfx, proc->requestor_id);
	if (proc->validation_bits & CPER_PROC_VALID_RESPONDER_ID)
		printk("%s""responder_id: 0x%016llx\n",
		       pfx, proc->responder_id);
	if (proc->validation_bits & CPER_PROC_VALID_IP)
		printk("%s""IP: 0x%016llx\n", pfx, proc->ip);
}

static const char * const mem_err_type_strs[] = {
	"unknown",
	"no error",
	"single-bit ECC",
	"multi-bit ECC",
	"single-symbol chipkill ECC",
	"multi-symbol chipkill ECC",
	"master abort",
	"target abort",
	"parity error",
	"watchdog timeout",
	"invalid address",
	"mirror Broken",
	"memory sparing",
	"scrub corrected error",
	"scrub uncorrected error",
	"physical memory map-out event",
};

const char *cper_mem_err_type_str(unsigned int etype)
{
	return etype < ARRAY_SIZE(mem_err_type_strs) ?
		mem_err_type_strs[etype] : "unknown";
}
EXPORT_SYMBOL_GPL(cper_mem_err_type_str);

static int cper_mem_err_location(struct cper_mem_err_compact *mem, char *msg)
{
	u32 len, n;

	if (!msg)
		return 0;

	n = 0;
	len = CPER_REC_LEN - 1;
	if (mem->validation_bits & CPER_MEM_VALID_NODE)
		n += scnprintf(msg + n, len - n, "node: %d ", mem->node);
	if (mem->validation_bits & CPER_MEM_VALID_CARD)
		n += scnprintf(msg + n, len - n, "card: %d ", mem->card);
	if (mem->validation_bits & CPER_MEM_VALID_MODULE)
		n += scnprintf(msg + n, len - n, "module: %d ", mem->module);
	if (mem->validation_bits & CPER_MEM_VALID_RANK_NUMBER)
		n += scnprintf(msg + n, len - n, "rank: %d ", mem->rank);
	if (mem->validation_bits & CPER_MEM_VALID_BANK)
		n += scnprintf(msg + n, len - n, "bank: %d ", mem->bank);
	if (mem->validation_bits & CPER_MEM_VALID_BANK_GROUP)
		n += scnprintf(msg + n, len - n, "bank_group: %d ",
			       mem->bank >> CPER_MEM_BANK_GROUP_SHIFT);
	if (mem->validation_bits & CPER_MEM_VALID_BANK_ADDRESS)
		n += scnprintf(msg + n, len - n, "bank_address: %d ",
			       mem->bank & CPER_MEM_BANK_ADDRESS_MASK);
	if (mem->validation_bits & CPER_MEM_VALID_DEVICE)
		n += scnprintf(msg + n, len - n, "device: %d ", mem->device);
	if (mem->validation_bits & (CPER_MEM_VALID_ROW | CPER_MEM_VALID_ROW_EXT)) {
		u32 row = mem->row;

		row |= cper_get_mem_extension(mem->validation_bits, mem->extended);
		n += scnprintf(msg + n, len - n, "row: %d ", row);
	}
	if (mem->validation_bits & CPER_MEM_VALID_COLUMN)
		n += scnprintf(msg + n, len - n, "column: %d ", mem->column);
	if (mem->validation_bits & CPER_MEM_VALID_BIT_POSITION)
		n += scnprintf(msg + n, len - n, "bit_position: %d ",
			       mem->bit_pos);
	if (mem->validation_bits & CPER_MEM_VALID_REQUESTOR_ID)
		n += scnprintf(msg + n, len - n, "requestor_id: 0x%016llx ",
			       mem->requestor_id);
	if (mem->validation_bits & CPER_MEM_VALID_RESPONDER_ID)
		n += scnprintf(msg + n, len - n, "responder_id: 0x%016llx ",
			       mem->responder_id);
	if (mem->validation_bits & CPER_MEM_VALID_TARGET_ID)
		scnprintf(msg + n, len - n, "target_id: 0x%016llx ",
			  mem->target_id);
	if (mem->validation_bits & CPER_MEM_VALID_CHIP_ID)
		scnprintf(msg + n, len - n, "chip_id: %d ",
			  mem->extended >> CPER_MEM_CHIP_ID_SHIFT);

	msg[n] = '\0';
	return n;
}

static int cper_dimm_err_location(struct cper_mem_err_compact *mem, char *msg)
{
	u32 len, n;
	const char *bank = NULL, *device = NULL;

	if (!msg || !(mem->validation_bits & CPER_MEM_VALID_MODULE_HANDLE))
		return 0;

	len = CPER_REC_LEN;
	dmi_memdev_name(mem->mem_dev_handle, &bank, &device);
	if (bank && device)
		n = snprintf(msg, len, "DIMM location: %s %s ", bank, device);
	else
		n = snprintf(msg, len,
			     "DIMM location: not present. DMI handle: 0x%.4x ",
			     mem->mem_dev_handle);

	return n;
}

void cper_mem_err_pack(const struct cper_sec_mem_err *mem,
		       struct cper_mem_err_compact *cmem)
{
	cmem->validation_bits = mem->validation_bits;
	cmem->node = mem->node;
	cmem->card = mem->card;
	cmem->module = mem->module;
	cmem->bank = mem->bank;
	cmem->device = mem->device;
	cmem->row = mem->row;
	cmem->column = mem->column;
	cmem->bit_pos = mem->bit_pos;
	cmem->requestor_id = mem->requestor_id;
	cmem->responder_id = mem->responder_id;
	cmem->target_id = mem->target_id;
	cmem->extended = mem->extended;
	cmem->rank = mem->rank;
	cmem->mem_array_handle = mem->mem_array_handle;
	cmem->mem_dev_handle = mem->mem_dev_handle;
}

const char *cper_mem_err_unpack(struct trace_seq *p,
				struct cper_mem_err_compact *cmem)
{
	const char *ret = trace_seq_buffer_ptr(p);

	if (cper_mem_err_location(cmem, rcd_decode_str))
		trace_seq_printf(p, "%s", rcd_decode_str);
	if (cper_dimm_err_location(cmem, rcd_decode_str))
		trace_seq_printf(p, "%s", rcd_decode_str);
	trace_seq_putc(p, '\0');

	return ret;
}

static void cper_print_mem(const char *pfx, const struct cper_sec_mem_err *mem,
	int len)
{
	struct cper_mem_err_compact cmem;

	/* Don't trust UEFI 2.1/2.2 structure with bad validation bits */
	if (len == sizeof(struct cper_sec_mem_err_old) &&
	    (mem->validation_bits & ~(CPER_MEM_VALID_RANK_NUMBER - 1))) {
		pr_err(FW_WARN "valid bits set for fields beyond structure\n");
		return;
	}
	if (mem->validation_bits & CPER_MEM_VALID_ERROR_STATUS)
		printk("%s""error_status: 0x%016llx\n", pfx, mem->error_status);
	if (mem->validation_bits & CPER_MEM_VALID_PA)
		printk("%s""physical_address: 0x%016llx\n",
		       pfx, mem->physical_addr);
	if (mem->validation_bits & CPER_MEM_VALID_PA_MASK)
		printk("%s""physical_address_mask: 0x%016llx\n",
		       pfx, mem->physical_addr_mask);
	cper_mem_err_pack(mem, &cmem);
	if (cper_mem_err_location(&cmem, rcd_decode_str))
		printk("%s%s\n", pfx, rcd_decode_str);
	if (mem->validation_bits & CPER_MEM_VALID_ERROR_TYPE) {
		u8 etype = mem->error_type;
		printk("%s""error_type: %d, %s\n", pfx, etype,
		       cper_mem_err_type_str(etype));
	}
	if (cper_dimm_err_location(&cmem, rcd_decode_str))
		printk("%s%s\n", pfx, rcd_decode_str);
}

static const char * const pcie_port_type_strs[] = {
	"PCIe end point",
	"legacy PCI end point",
	"unknown",
	"unknown",
	"root port",
	"upstream switch port",
	"downstream switch port",
	"PCIe to PCI/PCI-X bridge",
	"PCI/PCI-X to PCIe bridge",
	"root complex integrated endpoint device",
	"root complex event collector",
};

static void cper_print_pcie(const char *pfx, const struct cper_sec_pcie *pcie,
			    const struct acpi_hest_generic_data *gdata)
{
	if (pcie->validation_bits & CPER_PCIE_VALID_PORT_TYPE)
		printk("%s""port_type: %d, %s\n", pfx, pcie->port_type,
		       pcie->port_type < ARRAY_SIZE(pcie_port_type_strs) ?
		       pcie_port_type_strs[pcie->port_type] : "unknown");
	if (pcie->validation_bits & CPER_PCIE_VALID_VERSION)
		printk("%s""version: %d.%d\n", pfx,
		       pcie->version.major, pcie->version.minor);
	if (pcie->validation_bits & CPER_PCIE_VALID_COMMAND_STATUS)
		printk("%s""command: 0x%04x, status: 0x%04x\n", pfx,
		       pcie->command, pcie->status);
	if (pcie->validation_bits & CPER_PCIE_VALID_DEVICE_ID) {
		const __u8 *p;
		printk("%s""device_id: %04x:%02x:%02x.%x\n", pfx,
		       pcie->device_id.segment, pcie->device_id.bus,
		       pcie->device_id.device, pcie->device_id.function);
		printk("%s""slot: %d\n", pfx,
		       pcie->device_id.slot >> CPER_PCIE_SLOT_SHIFT);
		printk("%s""secondary_bus: 0x%02x\n", pfx,
		       pcie->device_id.secondary_bus);
		printk("%s""vendor_id: 0x%04x, device_id: 0x%04x\n", pfx,
		       pcie->device_id.vendor_id, pcie->device_id.device_id);
		p = pcie->device_id.class_code;
		printk("%s""class_code: %02x%02x%02x\n", pfx, p[2], p[1], p[0]);
	}
	if (pcie->validation_bits & CPER_PCIE_VALID_SERIAL_NUMBER)
		printk("%s""serial number: 0x%04x, 0x%04x\n", pfx,
		       pcie->serial_number.lower, pcie->serial_number.upper);
	if (pcie->validation_bits & CPER_PCIE_VALID_BRIDGE_CONTROL_STATUS)
		printk(
	"%s""bridge: secondary_status: 0x%04x, control: 0x%04x\n",
	pfx, pcie->bridge.secondary_status, pcie->bridge.control);

	/* Fatal errors call __ghes_panic() before AER handler prints this */
	if ((pcie->validation_bits & CPER_PCIE_VALID_AER_INFO) &&
	    (gdata->error_severity & CPER_SEV_FATAL)) {
		struct aer_capability_regs *aer;

		aer = (struct aer_capability_regs *)pcie->aer_info;
		printk("%saer_uncor_status: 0x%08x, aer_uncor_mask: 0x%08x\n",
		       pfx, aer->uncor_status, aer->uncor_mask);
		printk("%saer_uncor_severity: 0x%08x\n",
		       pfx, aer->uncor_severity);
		printk("%sTLP Header: %08x %08x %08x %08x\n", pfx,
		       aer->header_log.dw0, aer->header_log.dw1,
		       aer->header_log.dw2, aer->header_log.dw3);
	}
}

static const char * const fw_err_rec_type_strs[] = {
	"IPF SAL Error Record",
	"SOC Firmware Error Record Type1 (Legacy CrashLog Support)",
	"SOC Firmware Error Record Type2",
};

static void cper_print_fw_err(const char *pfx,
			      struct acpi_hest_generic_data *gdata,
			      const struct cper_sec_fw_err_rec_ref *fw_err)
{
	void *buf = acpi_hest_get_payload(gdata);
	u32 offset, length = gdata->error_data_length;

	printk("%s""Firmware Error Record Type: %s\n", pfx,
	       fw_err->record_type < ARRAY_SIZE(fw_err_rec_type_strs) ?
	       fw_err_rec_type_strs[fw_err->record_type] : "unknown");
	printk("%s""Revision: %d\n", pfx, fw_err->revision);

	/* Record Type based on UEFI 2.7 */
	if (fw_err->revision == 0) {
		printk("%s""Record Identifier: %08llx\n", pfx,
		       fw_err->record_identifier);
	} else if (fw_err->revision == 2) {
		printk("%s""Record Identifier: %pUl\n", pfx,
		       &fw_err->record_identifier_guid);
	}

	/*
	 * The FW error record may contain trailing data beyond the
	 * structure defined by the specification. As the fields
	 * defined (and hence the offset of any trailing data) vary
	 * with the revision, set the offset to account for this
	 * variation.
	 */
	if (fw_err->revision == 0) {
		/* record_identifier_guid not defined */
		offset = offsetof(struct cper_sec_fw_err_rec_ref,
				  record_identifier_guid);
	} else if (fw_err->revision == 1) {
		/* record_identifier not defined */
		offset = offsetof(struct cper_sec_fw_err_rec_ref,
				  record_identifier);
	} else {
		offset = sizeof(*fw_err);
	}

	buf += offset;
	length -= offset;

	print_hex_dump(pfx, "", DUMP_PREFIX_OFFSET, 16, 4, buf, length, true);
}

static void cper_print_tstamp(const char *pfx,
				   struct acpi_hest_generic_data_v300 *gdata)
{
	__u8 hour, min, sec, day, mon, year, century, *timestamp;

	if (gdata->validation_bits & ACPI_HEST_GEN_VALID_TIMESTAMP) {
		timestamp = (__u8 *)&(gdata->time_stamp);
		sec       = bcd2bin(timestamp[0]);
		min       = bcd2bin(timestamp[1]);
		hour      = bcd2bin(timestamp[2]);
		day       = bcd2bin(timestamp[4]);
		mon       = bcd2bin(timestamp[5]);
		year      = bcd2bin(timestamp[6]);
		century   = bcd2bin(timestamp[7]);

		printk("%s%ststamp: %02d%02d-%02d-%02d %02d:%02d:%02d\n", pfx,
		       (timestamp[3] & 0x1 ? "precise " : "imprecise "),
		       century, year, mon, day, hour, min, sec);
	}
}

static void
cper_estatus_print_section(const char *pfx, struct acpi_hest_generic_data *gdata,
			   int sec_no)
{
	guid_t *sec_type = (guid_t *)gdata->section_type;
	__u16 severity;
	char newpfx[64];

	if (acpi_hest_get_version(gdata) >= 3)
		cper_print_tstamp(pfx, (struct acpi_hest_generic_data_v300 *)gdata);

	severity = gdata->error_severity;
	printk("%s""Error %d, type: %s\n", pfx, sec_no,
	       cper_severity_str(severity));
	if (gdata->validation_bits & CPER_SEC_VALID_FRU_ID)
		printk("%s""fru_id: %pUl\n", pfx, gdata->fru_id);
	if (gdata->validation_bits & CPER_SEC_VALID_FRU_TEXT)
		printk("%s""fru_text: %.20s\n", pfx, gdata->fru_text);

	snprintf(newpfx, sizeof(newpfx), "%s ", pfx);
	if (guid_equal(sec_type, &CPER_SEC_PROC_GENERIC)) {
		struct cper_sec_proc_generic *proc_err = acpi_hest_get_payload(gdata);

		printk("%s""section_type: general processor error\n", newpfx);
		if (gdata->error_data_length >= sizeof(*proc_err))
			cper_print_proc_generic(newpfx, proc_err);
		else
			goto err_section_too_small;
	} else if (guid_equal(sec_type, &CPER_SEC_PLATFORM_MEM)) {
		struct cper_sec_mem_err *mem_err = acpi_hest_get_payload(gdata);

		printk("%s""section_type: memory error\n", newpfx);
		if (gdata->error_data_length >=
		    sizeof(struct cper_sec_mem_err_old))
			cper_print_mem(newpfx, mem_err,
				       gdata->error_data_length);
		else
			goto err_section_too_small;
	} else if (guid_equal(sec_type, &CPER_SEC_PCIE)) {
		struct cper_sec_pcie *pcie = acpi_hest_get_payload(gdata);

		printk("%s""section_type: PCIe error\n", newpfx);
		if (gdata->error_data_length >= sizeof(*pcie))
			cper_print_pcie(newpfx, pcie, gdata);
		else
			goto err_section_too_small;
#if defined(CONFIG_ARM64) || defined(CONFIG_ARM)
	} else if (guid_equal(sec_type, &CPER_SEC_PROC_ARM)) {
		struct cper_sec_proc_arm *arm_err = acpi_hest_get_payload(gdata);

		printk("%ssection_type: ARM processor error\n", newpfx);
		if (gdata->error_data_length >= sizeof(*arm_err))
			cper_print_proc_arm(newpfx, arm_err);
		else
			goto err_section_too_small;
#endif
#if defined(CONFIG_UEFI_CPER_X86)
	} else if (guid_equal(sec_type, &CPER_SEC_PROC_IA)) {
		struct cper_sec_proc_ia *ia_err = acpi_hest_get_payload(gdata);

		printk("%ssection_type: IA32/X64 processor error\n", newpfx);
		if (gdata->error_data_length >= sizeof(*ia_err))
			cper_print_proc_ia(newpfx, ia_err);
		else
			goto err_section_too_small;
#endif
	} else if (guid_equal(sec_type, &CPER_SEC_FW_ERR_REC_REF)) {
		struct cper_sec_fw_err_rec_ref *fw_err = acpi_hest_get_payload(gdata);

		printk("%ssection_type: Firmware Error Record Reference\n",
		       newpfx);
		/* The minimal FW Error Record contains 16 bytes */
		if (gdata->error_data_length >= SZ_16)
			cper_print_fw_err(newpfx, gdata, fw_err);
		else
			goto err_section_too_small;
	} else {
		const void *err = acpi_hest_get_payload(gdata);

		printk("%ssection type: unknown, %pUl\n", newpfx, sec_type);
		printk("%ssection length: %#x\n", newpfx,
		       gdata->error_data_length);
		print_hex_dump(newpfx, "", DUMP_PREFIX_OFFSET, 16, 4, err,
			       gdata->error_data_length, true);
	}

	return;

err_section_too_small:
	pr_err(FW_WARN "error section length is too small\n");
}

void cper_estatus_print(const char *pfx,
			const struct acpi_hest_generic_status *estatus)
{
	struct acpi_hest_generic_data *gdata;
	int sec_no = 0;
	char newpfx[64];
	__u16 severity;

	severity = estatus->error_severity;
	if (severity == CPER_SEV_CORRECTED)
		printk("%s%s\n", pfx,
		       "It has been corrected by h/w "
		       "and requires no further action");
	printk("%s""event severity: %s\n", pfx, cper_severity_str(severity));
	snprintf(newpfx, sizeof(newpfx), "%s ", pfx);

	apei_estatus_for_each_section(estatus, gdata) {
		cper_estatus_print_section(newpfx, gdata, sec_no);
		sec_no++;
	}
}
EXPORT_SYMBOL_GPL(cper_estatus_print);

int cper_estatus_check_header(const struct acpi_hest_generic_status *estatus)
{
	if (estatus->data_length &&
	    estatus->data_length < sizeof(struct acpi_hest_generic_data))
		return -EINVAL;
	if (estatus->raw_data_length &&
	    estatus->raw_data_offset < sizeof(*estatus) + estatus->data_length)
		return -EINVAL;

	return 0;
}
EXPORT_SYMBOL_GPL(cper_estatus_check_header);

int cper_estatus_check(const struct acpi_hest_generic_status *estatus)
{
	struct acpi_hest_generic_data *gdata;
	unsigned int data_len, record_size;
	int rc;

	rc = cper_estatus_check_header(estatus);
	if (rc)
		return rc;

	data_len = estatus->data_length;

	apei_estatus_for_each_section(estatus, gdata) {
		if (sizeof(struct acpi_hest_generic_data) > data_len)
			return -EINVAL;

		record_size = acpi_hest_get_record_size(gdata);
		if (record_size > data_len)
			return -EINVAL;

		data_len -= record_size;
	}
	if (data_len)
		return -EINVAL;

	return 0;
}
EXPORT_SYMBOL_GPL(cper_estatus_check);